HootSuite's Twitter Week in Review, July 28-Aug. 3

Our Twitter Week in Review chart uses data collected and parsed for Ad Age by the What the Trend (WTT) unit of HootSuite, the social-media management dashboard with more than three million users. (Last week's chart is right over here.) We're back today with Volume 18. Scroll down below the infographic for some context -- and watch for a fresh edition of our Twitter Week in Review each Friday.

The Olympics' opening ceremony generated overwhelming discussion on Twitter. Danny Boyle, the "Slumdog Millionaire" director who helmed the ceremony, also trended high but just missed charting this week at No. 11.

The games earned two more spots on the chart, including one for Ryan Lochte, the much-hyped swimmer and rival of record-breaking teammate Michael Phelps. Lochte took home the silver medal in his final 200-meter medley against Phelps, who won the gold, to complement two gold medals and a bronze for other events, all of which brought his Olympic medal total to 11 -- enough to become the second-most decorated American Olympian after Phelps. Meanwhile, 22 -year-old Sarah Menezes became the first Brazilian woman to take home the gold medal in Judo. It's no surprise that this point of Brazilian national pride would impact Twitter so strongly among all other Olympic trends; Brazil is the second-most-active country on Twitter next to the U.S., with 33 million active users.

"Harry Potter" author J.K. Rowling's birthday was this Tuesday, and Twitterers decided to honor her by using her real first name, Joanne. (The author has said she used "J.K." to mask her gender, at the urging of her publishers.) Rowling also shares her birthday with the fictional character that made her famous. This likely won't be the last we see of Rowling on the trends list this year, by the way: Next month she plans to release her first non-Potter novel, "The Casual Vacancy," a black comedy for adults about the odd goings-on in a tiny English village. Especially given the fact that many of her former child fans have aged out of children's fiction (and into social media), it's a good bet Rowling's reputation alone will drive plenty of social buzz.

Meanwhile, Twi-hards everywhere were doing what they do best: frantically showing support and unrequited love for actor Robert Pattinson. His now-vilified girlfriend and "Twilight" co-star Kristen Stewart recently confirmed rumors that she had, indeed, cheated on him with her "Snow White and the Huntsman" director, Rupert Sanders, in late July. #StayStrongRob is their message to Pattinson, who is rumored to be holed up in one of co-star Reese Witherspoon's Southern California homes. Though a quick Twitter search reveals fans are still bitter at Stewart, who has also kept a low profile since issuing her statement, their take has improved a bit from their initial reaction.

For explanations of trends and memes not covered above, visit HootSuite's What the Trend.